Talk:Reflection (geometry): Difference between revisions

From Citizendium
Jump to navigation Jump to search
imported>Paul Wormer
imported>Peter Schmitt
No edit summary
Line 11: Line 11:
::Maybe you could also have a look at [[Affine space]]?
::Maybe you could also have a look at [[Affine space]]?
::--[[User:Paul Wormer|Paul Wormer]] 13:34, 20 July 2009 (UTC)
::--[[User:Paul Wormer|Paul Wormer]] 13:34, 20 July 2009 (UTC)
::: Paul, physicists are not mathematical "amateurs" - some things they can even do (much) better. I noticed that this is work in progress (and why not?), but I thought that changing the definition would not do any harm. Mathematical language is not "better" than physical language (unless, of course, physicists forget about checking for convergence at all ;-). And as I have said in another discussion - the only "problem" will be how to satisfy -- in the end -- the needs of both sides. [[User:Peter Schmitt|Peter Schmitt]] 14:52, 20 July 2009 (UTC)

Revision as of 08:52, 20 July 2009

This article is developing and not approved.
Main Article
Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
To learn how to update the categories for this article, see here. To update categories, edit the metadata template.
 Definition In Euclidean geometry, a distance preserving transformation that reverses orientation [d] [e]
Checklist and Archives
 Workgroup category Mathematics [Please add or review categories]
 Talk Archive none  English language variant American English

About the definition

Do you really mean any involutive linear map? Should the map be also isometric? Is an identity map a reflection? Boris Tsirelson 17:29, 18 July 2009 (UTC)

Boris is right. There is also rotation about π. And it should not be restricted to linear spaces since it is a geometric term. I'll give it a try. Peter Schmitt 19:25, 18 July 2009 (UTC)
I hadn't finished yet (I know I should have used a sandbox, but until recently hardly anybody read my work). Now I have finished and I'm open to any criticism you gentlemen may have. Remember that as a mathematical amateur I'm using a nomenclature that comes mainly from physics sources. As far as I can see, mathematicians understand the physical language very well—although they often don't like it because they find it too verbose—but the converse is not true, many physicists and practically all chemists do not know advanced mathematical terminology.
Maybe you could also have a look at Affine space?
--Paul Wormer 13:34, 20 July 2009 (UTC)
Paul, physicists are not mathematical "amateurs" - some things they can even do (much) better. I noticed that this is work in progress (and why not?), but I thought that changing the definition would not do any harm. Mathematical language is not "better" than physical language (unless, of course, physicists forget about checking for convergence at all ;-). And as I have said in another discussion - the only "problem" will be how to satisfy -- in the end -- the needs of both sides. Peter Schmitt 14:52, 20 July 2009 (UTC)